Abstract: Method and apparatus for production of 3-D images (volume displays) from a set of 2-D images employing one or more multiple component holographic optical elements (mcHOEs) in combination with an off-axis array of a plurality of 2-D illuminated (or radiative) components of objects to be synthesized into 3-D images of the objects. An array of component regions is disposed in at least one plane generally normal to a defined optical axis. A mcHOE is disposed in a plane parallel to the plane of the array with the optical axis passing therethrough. The components are illuminated from behind, or are themselves radiative (as, for example, in the case of CRT screen(s)). The observer is positioned along the optical axis in front of the mcHOE. The mcHOEs are virtual image transmission or reflection holograms, but real images may be produced by using the appropriate mcHOE. The component region array is a set of 2-D representations of portions of an object (e.g.

Abstract: Method and apparatus for cyclic control of both potential and current in electrolysis, called Cyclic, Controlled-potential, controlled current Electrolysis. The method can be used with a two-electrode cell (W and C), or a three-electrode set-up using a reference electrode R to form two half cells. The method involves supplying a controlled current, preferably a constant current, to the W and C electrodes to operate the electrolysis within well-defined upper and lower potential limits. In a first embodiment (called the constant-current, preset-voltage mode), when a predetermined voltage is reached, the current is reversed until a second predetermined voltage is reached. The cycle is then repeated continuously. In a second embodiment (called the preset-voltage, preset-time mode) the current is maintained constant until the predetermined voltage is reached. Then the voltage is maintained constant by reducing the current until a predetermined time of operation has elapsed.

Abstract: This invention relates to a mould material binding agent system for the production of foundry mould parts. This binding agent system contains as components a solution of a phenol-containing polyol having at least two OH groups in the molecule and a polyisocyanate, optionally also in the form of a solution, having at least two NCO groups in the molecule, which react with one another to a cold-hardening binding agent with formation of polyurethane. According to the invention there is also added to the polyisocyanate component a chlorosilane, which for example may comprise one or more compounds of the group trimethyl chlorosilane, dimethyl dichlorosilane, methyl trichlorosilane, tetrachlorosilane, diethyl chlorosilane, vinyl trichlorosilane and diphenyl dichlorosilane. The added quantity is preferably 0.01-2% by wt. relative to the polyisocyanate component.

Abstract: Lightweight chair from a single unitary die-cut and scored generally rectangular blank of sheet material which is collapsible for easy storing and carrying, and which pops open for easy set-up. The lower 10-20% of the blank has a plurality of flaps gulable to the inner face of adjoining sidewall panels to form a reinforced base perimeter. Half of the blank forms the chair base sidewalls, and the remaining upper half forms a pair of adjoining seat/back panels which are delineated from the sidewalls by a set of generally W-shaped score lines. An assembly tab at one end is fastened to the opposite side of the other end of the blank to form in cross-section an enclosed polygon, preferably a modified hexagon of unequal sides. A first of the pair of seat/back panel assemblies is folded down with one or more tabs or flaps frictionally engaging one or more of the sidewall panels.

Abstract: The invention provides a constant mesh reverse gear operable by a standard rotary shift drum and fork system which is located within the engine casing along with from 3-5 forward gears of the motorcycle transmission. The reverse gear is mounted on the countershaft and engages an idler mounted on its own separate shaft in engagement with a main shaft reverse gear. The idler pin is secured between a pair of plates mounted on the transmission endplate. These plates also have apertures therein to receive the main shaft and countershaft. A standard toe-operated shift lever engages a shift arm which in turn engages a pawl and cam plate assembly for rotating the rotary shift drum. The shift forks are operated by pins riding in cam grooves on the rotary shift drum. An indicator plate on the cam plate assembly contains a contact boss. The contact boss engages electrical contacts in the rear of the engine casing so that the engagement of the transmission in reverse gear may be positively indicated.